*{
    padding:0;
    margin:0;
    box-sizing: border-box;
}
body{
    font: 20px bold;
}
@bg-color: #bbf;
#main{
    width:360px;
    height:420px;
    border:10px solid #000;
    background: @bg-color;
    border-radius: 10px;
    display: flex;
    flex-flow: column;
    align-items: center;
    justify-content: space-around;
    margin: 0 auto;
    #stage{
        width:304px;
        height: 304px;
        border: 2px solid #000;
        position: relative;
        .black{
            width:10px;
            height: 10px;
            background-color: #000;
            border: 1px solid @bg-color;
            position: absolute;
        }
        #food{
            top: 100px;
            left: 80px;
            background: #a00;
        }
    }
    #score-panel{
        width:300px;
        display: flex;
        justify-content: space-between;
    }
}